// //]]>
##### Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back

clear

Next time you have a doubt while studying, you know where to go. By simply posting your questions on Question & Answer Forum, you can have them answered by academic experts. You can also find related videos and explanations for better understanding.

Agam answered 1 year(s) , 10 month(s) ago

Edit the following passage

WRONG                          CORRECT

Have                                   Has
Were                                  is
since                        ...

Sep 19

• 79 Likes
• 236647 Views

Sep 19

Priyanshu answered 11 month(s) , 3 day(s) ago

Speech of 1 minute on "hobbies and interest". very urgent

Note: This question is to be answered on the basis of your own understanding, experience and thoughts. It is strongly recommended that you prepare the solution on your own. However, one sample soluti

...

Sep 28

• 52 Likes
• 210439 Views

Sep 28

Priyanshu answered 1 year(s) , 7 month(s) ago

The ratio of the sum of n terms of two A.P.s is (7n+1):(4n+27).

Answer. Given ratio of sum of n terms of two AP’s = (7n+1):(4n+27)
Let’s consider the ratio these two AP’s mth terms as am : a’m →(2)
Recall the nth term of AP formula, an = a + (n – 1)d...

Nov 13

• 38 Likes
• 187524 Views

Nov 13

Show that one and only one out of n,n+2,n+4 is divisible by 3, where n is any positive integer.

We applied Euclid Division algorithm on n and 3.
a = bq +r  on putting a = n and b = 3
n = 3q +r  , 0 i.e n = 3q   -------- (1),n = 3q +1 --------- (2), n = 3...

Apr 15

• 32 Likes
• 167002 Views

Apr 15

Priyanshu answered 1 year(s) , 7 month(s) ago

What are the values of log from 1 to 10?

log 1 = 0
log 2 = 0.3010
log 3 = 0.4771
log 4 = 0.6020
log 5 = 0.6989
log 6 = 0.7781
log 7 = 0.8450
log 8 = 0.9030
log 9 = 0.9542 <...

Jan 18

• 12 Likes
• 140089 Views

Jan 18

Find the value of tan 15 degrees

Let  tan(15°) = tan(45°-30°)

We know that tan(A - B) = (tanA - tanB) /(1 + tan A tan B)

⇒tan(45°-30°) = (tan45°- tan30°)/(1+tan45°tan30°)

= {1-

...

Apr 20

• 12 Likes
• 118210 Views

Apr 20

Priyanshu answered 1 year(s) , 10 month(s) ago

what is the derivation of mirror formula of concave and convex mirror?

Consider the shown figure where O is a point object and I is corresponding image.
CB is normal to the mirror at B.
By laws of reflection,

For small aperture...

Nov 16

• 29 Likes
• 116009 Views

Nov 16

An electric bulb is rated 220V and 100W. when it is operated on 110V, what will be the power consumed?

P = V 2/R
If V = 220 V we have

100 W = 220 2/R
R = 220 2/100 Ω = 484 Ω. This is the resistance of the bulb.

When V = 110 V,...

Jun 24

• 6 Likes
• 113537 Views

Jun 24

Find the greatest 6 digits number exactly divisible by 24, 15,and 36.

We will find out the LCM of 24,15 and 36 is 360.

Now, greatest 6-digit number is 999999.

Now, We will divide this number by LCM of 24,15 and 36, we will get,

999999/360 will get remai

...

Apr 20

• 7 Likes
• 108822 Views

Apr 20

If the polynomial X4- 6X3+16X2-25X+10 is divided by X2-2X+k

Given that the remainder is (x + a)
⇒ (4k – 25 + 16 – 2k)x + [10 – k(8 – k) ] = x + a
⇒ (2k – 9)x + [10 – 8k + k 2 ] = x + a
On comparing both the sides, we get...

Aug 20

• 10 Likes
• 107121 Views

Aug 20

Priyanshu answered 1 year(s) , 7 month(s) ago

Explain the mechanism of opening and closing of stomata.

Sol:
Stomata are small pores present in the epidermal cells of leaves in plants. Stomata are open during the day and close during night.Stomata take in carbon dioxide required for the photosynthetic act...

Mar 22

• 7 Likes
• 104569 Views

Mar 22

A plane left 30 min later than the scheduled time and in order to reach the destination 1500km away in time it has to increase the speed by 250km/h from the usual speed. find its usual speed

Sol:
Let the usual time taken by the aeroplane = x km/hr
Distance to the destination = 1500 km
Case (i)
Speed = Distance / Time = (1500 / x) Hrs

Case (iI)...

Apr 28

• 6 Likes
• 100681 Views

Apr 28

Syeda answered 1 year(s) , 11 month(s) ago

What is the difference between horizontal and vertical power sharing?

The horizontal power sharing

Power is shared among different organs of government such as the legislature, executive and judiciary.

Organs of the government are placed at the same level to ex

...

Apr 18

• 7 Likes
• 96633 Views

Apr 18

If mth term of an A.P is 1/n and the nth term is 1/m

• SME Approved

Nov 24

• 9 Likes
• 96458 Views

Nov 24

Yogita answered 1 year(s) , 3 month(s) ago

In this solution triangle ABC and ACE is taken in place of ABC, ABE should be taken.

Sep 1

• 13 Likes
• 94234 Views

Sep 1

Agam answered 1 year(s) , 10 month(s) ago

What is nutrition? Explain different types of nutrition.

Nutrition is the process by which an organism procures its nourishment, the supply of nutrients required by its body and cells to stay alive. Nutrition is of two types namely, autotrophi...

Feb 18

• 8 Likes
• 92563 Views

Feb 18

Anand answered 1 year(s) , 4 month(s) ago

What is the difference between a virtual image and a real image?

The following are the main differences between a real image and virtual image.

1.A real image can be caught on a screen whereas a virtual image cannot be caught on a screen.
2. A real i...

Dec 3

• 23 Likes
• 91190 Views

Dec 3

Find the largest number which divide 615 and 963 leaving remainder 6 in each case.

To find the largest number which divides 615 and 963 leaving remainder 6 in each case i.e. HCF.

Consider HCF be x.

In order to make 615 and 963 completely divisible by x, we need to deduct th

...

May 22

• 6 Likes
• 87695 Views

May 22

Key Features of Federalism

There are two or more levels  of government.

1.  Different tiers of government govern the same citizens, but each tier has its own jurisdiction in specific matters of legislation,

...

Aug 19

• 5 Likes
• 87031 Views

Aug 19

Prove that the product of three consecutive positive integer is divisible by 6.

Sol;
Let us three consecutive  integers be, n, n + 1 and n + 2.
Whenever a number is divided by 3 the remainder obtained is either 0 or 1 or 2.
let n = 3p or 3p + 1 or 3p + 2, where p is so...

Apr 27

• 6 Likes
• 85380 Views

Apr 27

###### Like NextGurukul? Also explore our advanced self-learning solution LearnNext
Offered for classes 6-12, LearnNext is a popular self-learning solution for students who strive for excellence
Explore
Animated Video
lessons
All India
Test Series
Interactive Video
Experiments
Best-in class
books